Dynamic Knapsack Model Report
Parameters
Model Parameters
This model is a smaller instance of the full problem:
- Planning horizon is decreased from 24 weeks to 10 weeks
- Maximum tracked wait is decreased from 6 weeks to 4 weeks
- There are 3 surgeries instead of 6 surgeries
- Number of priorities is set to 1
Simulation Parameters
- 30 Replications
- 1250 weeks duration
- 250 weeks warm up
Surgeries
- Surgery 1 - 1. SPINE POSTERIOR DECOMPRESSION/LAMINECTOMY LUMBAR
- Surgery 4 - 4. SPINE POST CERV DECOMPRESSION AND FUSION W INSTR
- Surgery 6 - 6. SPINE POSTERIOR DISCECTOMY LUMBAR
Arrival Rate
It was set to be 95% of the capacity, however due to transitions, the resource usage should be higher than 95%
| Surgery | Complexity | Arrival_Adjusted | Arrival_Original | Rationale |
|---|---|---|---|---|
| Surgery 1 | Complexity 1 | 1.2319885 | 1.0000 | once per week |
| Surgery 1 | Complexity 2 | 0.6159942 | 0.5000 | once per two weeks |
| Surgery 4 | Complexity 1 | 0.1437320 | 0.0833 | once per 3 months |
| Surgery 4 | Complexity 2 | 0.1026657 | 0.0625 | once per 4 months |
| Surgery 6 | Complexity 1 | 1.2319885 | 1.0000 | once per week |
| Surgery 6 | Complexity 2 | 0.6159942 | 0.5000 | once per 2 weeks |
Resource Usage
Usage of the resources
| Surgery | Complexity | Resource_Type | Usage |
|---|---|---|---|
| Surgery 1 | Complexity 1 | Admissions | 0.0 |
| Surgery 1 | Complexity 1 | OR_Time | 3.0 |
| Surgery 1 | Complexity 2 | Admissions | 1.0 |
| Surgery 1 | Complexity 2 | OR_Time | 4.0 |
| Surgery 4 | Complexity 1 | Admissions | 1.0 |
| Surgery 4 | Complexity 1 | OR_Time | 4.0 |
| Surgery 4 | Complexity 2 | Admissions | 1.0 |
| Surgery 4 | Complexity 2 | OR_Time | 5.5 |
| Surgery 6 | Complexity 1 | Admissions | 0.0 |
| Surgery 6 | Complexity 1 | OR_Time | 1.5 |
| Surgery 6 | Complexity 2 | Admissions | 0.0 |
| Surgery 6 | Complexity 2 | OR_Time | 2.5 |
Resource Capacity
| Resouce | Capacity_Weekly | Unit |
|---|---|---|
| Admissions | 1.50 | Patients Admitted per week |
| OR_Time | 11.25 | OR Hours per week |
R1R2 Report
This model is the default model that does not penalize bed under utilization
Policy Description
The description will be based on the following graphs (both of them are for M of 0 only):
The graph on the left shows in which days the MDP policy will allow scheduling. If the value is below 0 - the model will allow scheduling, otherwise the model will keep patients in the waitlist. Thus this policy will only schedule into week 1 and week 2
The plot on the right shows the approximate priority of different surgeries. The lower the surgery is on the list the more likely it is to be scheduled first.
Policy Results
R1R2R3 Report
In addition to the parameters above, this model penalizes bed under utilization in the first period
Policy Description
The description will be based on the following graphs:
Policy Results
The policy description is based on the following graphs.